LOL, or lol, is an acronym for laugh(ing) out loud or lots of laughs, and a popular element of Internet slang. It was first used almost exclusively on Usenet, but has since become widespread in other forms of computer-mediated communication and even face-to-face communication.
Quick Answer. The numeral one billion has nine zeros. This number is equal to one thousand million. In scientific notation, one billion is written as 1x10 to the ninth power.
500000000 * * * * * Clearly answered by someone who did not read the question properly. There are 8 zeros in 50 crores, not 500000000 zeros!